public class catdog {
    public class sa {
    }
    class cat extends animals{
        public void jiao(){
            System.out.println("喵喵");
        }
    }
    class dog extends animals {
        public void jiao() {
            System.out.println("汪汪");
        }
    }
        class egles extends animals {
            public void fei() {
                System.out.println("鎴戜細椋�");
            }
        }

        class yanzi extends animals {
            public void fei() {
                System.out.println("鎴戜細椋�");
            }
        }
    }